FreeS/WAN documentation

The following documents cover most of what you need to use FreeS/WAN:

Introduction, describing the IPsec protocols FreeS/WAN implements, why we are building it, and what you can do with it
Installing FreeS/WAN. You can skip this if your distribution includes FreeS/WAN.
Configuration. Setting up the system once it is installed.
FreeS/WAN and firewalls
Troubleshooting and problem reporting
manual pages
FreeS/WAN FAQ
known BUGS in current release
important CHANGES from previous releases

Other HTML documents provide more detail or background information, or cover more specialised topics:

For technical support and other questions, use the mailing list.